RFR [8u]: Backport parallel code cache scanning

[Roman Kennke]

Am 10.05.2017 um 12:58 schrieb Aleksey Shipilev:
> Hi,
>
> We know workloads that have lots of compiled code, and there parallel code cache
> scans are beneficial.
>
> Let's backport it from 9 to 8u:
>  http://cr.openjdk.java.net/~shade/shenandoah/parallel-codecache-8u/webrev.01/
>
> Testing: hotspot_gc_shenandoah, jcstress -m quick
>
> Thanks,
> -Aleksey
>
>
Yes